THE CANADIAN ENTOMOLOGIST. 127 



on the margin, but shorter than the first costal streak, like which it curves 

 backwards along the middle of the wing, being usually confluent or very 

 nearly so with the first costal streak ; a little further back, about the middle 

 of the costal margin, is another white costal streak shorter than the first, 

 but like it curving back along the middle of the wing, and usually con- 

 fluent with the first costal and first dorsal streaks. Then follows another 

 narrower and somewhat oblique costal white streak, opposite to which is a 

 triangular white dorsal spot separated from it by some brown scales ; just 

 before the ciliae is a curved white fascia concave towards the apex and 

 sometimes interrupted in the middle, and just before the apex is another 

 similar fascia, which, however, sometimes does not attain the dorsal 

 margin, and behind it in the apex is a short brow r n streak. All these 

 white streaks and fasciae are decidedly dark margined before, and more or 

 less dusted with grayish brown. There is a brown hinder marginal line 

 at the base of the ciliae, which latter are stramineous. 



In the former description the white dusted with gray brown was con- 

 sidered the ground color, and the golden or saffron as markings on that 

 ground, as in L. hamadryadella Clem., and L. sylvdla Stainton, and L. 

 populifoliella Zell., and the species was considered as belonging to the 

 same group with the latter. In this description I have perhaps more 

 properly considered the golden or yellowish hue as the ground color, and 

 the white dusted portions as the markings as in Mr. Stainton's group, j, 

 Nat. Hist. Tin., v. 2. Hence the apparent difference. 



Since the publication of my description of this species, Prof. Frey, of 

 Zurich, has described under the name of L. Scuderella a species bred by 

 him from mined Willow leaves, gathered in Massachusetts, which is pro- 

 bably identical with this. At my first examination of Prof. Frey's 

 description I thought otherwise, being unable to recognize this insect in 

 Prof. Frey's description, though they certainly agree in one peculiar 

 characteristic, viz., dark brown bands on the first pair of legs, to which 

 Prof. Frey first drew attention in his description. The discrepancies 

 between my specimens and the Professors description are chiefly in the 

 markings of the fore wings. But these may result from the variations in 

 the markings of the insect itself. Prof. Frey's specimens seem to have 

 been remarkably free from the dusting of brownish or gray brown scales, 

 and as I understand his description, one of the two fasciae in the apical 

 part of the wing is not mentioned. Still, considering the difficulty of 

 describing an insect so peculiarly marked and so variable as this species, 

 the probability is that it is L. salicifoliella Clem. 



